KDL-26NL140, KDL-32NL140, KDL-37NL140 - Sony TV Service Manual (repair manual). Page 3

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KDL-26NL140/32NL140/37NL140
KDL-26NL140/32NL140/37NL140
TABLE OF CONTENTS
SECTION TITLE   
PAGE
SECTION TITLE   
PAGE
Specifi cations ................................................................................. 4
Warnings and Cautions .................................................................. 6
Safety-Related Component Warning .............................................. 7
Safety Check-Out ........................................................................... 9
Self-Diagnostic Function ............................................................... 10
SECTION 1:  DISASSEMBLY ............................................................... 12
1-1.  Rear Cover Removal ............................................................ 12
1-2.  Switch Unit (H1 Board) Removal ......................................... 12
1-3.  LED Guide and HM3 Board Removal .................................. 13
1-4.  G1D Board/G2D Board (Power Unit) Removal .................... 13
1-5.  Side Jack Bracket, BG2A Board and RF Bracket Removal . 14
1-6.  Table-Top Stand Removal .................................................... 14
1-7.  Under Cover Removal .......................................................... 15
1-8.  Structural Frames and Brackets Removal ........................... 16
1-9. LCD Panel Removal 
............................................................. 17
1-10. ETC-Inverter  Board  Removal   .............................................. 17
1-11. Loudspeakers  Removal ....................................................... 18
Wire Dressing ............................................................................... 19
KDL-26NL140 Only .............................................................. 19
KDL-32NL140 Only .............................................................. 29
KDL-37NL140 Only .............................................................. 40
SECTION 2:  SERVICE ADJUSTMENTS ............................................. 51
2-1.  Resetting the TV to the Factory Defaults ............................. 51
SECTION 3:  DIAGRAMS ..................................................................... 52
3-1. Circuit Boards Location ........................................................ 52
3-2.  Printed Wiring Boards and 
 Schematic 
Diagrams 
Information 
......................................... 52
3-3. Block Diagram 
...................................................................... 54
3-4. Schematics and Supporting Information .............................. 55
BM Board Schematic Diagram (1 of 10) .............................. 55
BM Board Schematic Diagram (2 of 10) .............................. 56
BM Board Schematic Diagram (3 of 10) .............................. 57
BM Board Schematic Diagram (4 of 10) .............................. 58
BM Board Schematic Diagram (5 of 10) .............................. 59
BM Board Schematic Diagram (6 of 10) .............................. 60
BM Board Schematic Diagram (7 of 10) .............................. 61
BM Board Schematic Diagram (8 of 10) .............................. 62
BM Board Schematic Diagram (9 of 10) .............................. 63
BM Board Schematic Diagram (10 of 10) ............................ 64
G1D Board Schematic Diagram (KDL-26NL140 Only) ........ 66
G1D Board Schematic Diagram (KDL-32NL140 Only) ........ 69
G2D Board Schematic Diagram (1 of 2) 
 (KDL-37NL140 
Only) 
....................................................... 72
G2D Board Schematic Diagram (2 of 2) 
 (KDL-37NL140 
Only) 
....................................................... 73
HM3 Board Schematic Diagram ........................................... 76
3-5. Semiconductors ................................................................... 78
SECTION 4:  EXPLODED VIEWS ........................................................ 79
4-1.  Rear Cover Assembly and Table-Top Stand Assembly  ....... 79
4-2. Chassis ................................................................................ 80
4-3. Connectors 
........................................................................... 81
4-4. Bezel Assembly, LCD Panel and Speakers ......................... 82
4-5. Screw Legend ...................................................................... 83
SECTION 5:  ELECTRICAL PARTS LIST ............................................ 84
APPENDIX A:  ENCRYPTION KEY COMPONENTS ..........................A-1
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